package scenic.study.thinkinjava.unit6;//: c06:Wind.java
// From 'Thinking in Java, 2nd ed.' by Bruce Eckel
// www.BruceEckel.com. See copyright notice in CopyRight.txt.
// Inheritance & upcasting.

class Instrument {
    public void play() {
    }

    static void tune(Instrument i) {
        // ...
        i.play();
    }
}

// Wind objects are instruments
// because they have the same interface:
class Wind extends Instrument {
    public static void main(String[] args) {
        Wind flute = new Wind();
        Instrument.tune(flute); // Upcasting
    }
} ///:~